It has now been confirmed that there were two people in the car - a woman and a child - and not three as previously reported by the British Transport Police.
A spokesperson said: “The car contained two occupants, a woman and a child. The child sustained serious injuries and has been airlifted to hospital in Sheffield. The driver, a woman, received minor injuries and has been taken to hospital in Doncaster.
More top news
Occasional rain or showers, with some drier spells
A doctor from South Yorkshire can not drive his new £18,000 car for more than 40 minutes at a time because he is allergic to it.
A gang of men have been sentenced to over 35 years in prison for their part in a £750,000 drugs conspiracy